nanochess

Wow! We now have 7 amazing entries and only remains 96 hours to close the contest!

Maybe the mystery is inside a dungeon

Wow! It looks really good. You can go up to 32K for your games. Currently, there is no support for bank-switching. I'm working on more optimization for the CVBasic compiler so you can regain a few kilobytes in big programs.

Autocorrector guilty! I never noticed when the computer added automatically the extra period. I've removed it. I've cleaned the code a lot in v0.4.4 so the interrupts are enabled early. Because the interrupt handler runs early, your song auto-start fails because #vgm_song is zero. I've made this patch at the start of vgm_play and now it works just fine: IF #vgm_pointer = 0 THEN IF #vgm_song <> 0 THEN GOSUB vgm_start RETURN END IF

Thanks for the info! I'll be patched in the next version. In the meanwhile it can be done as you posted, or with this conditional definition to make it portable: .1: if SG1000 NOP ; 4 t-states (this is required to wait 29 t-states minimum) endif OUTI ; 16 t-states (18 on MSX/Coleco) JP NZ,.1 ; 10 t-states (11 on MSX/Coleco)

If your game is already coded in assembler, you could have a guide watching my translation layer to assemble both a game for Colecovision and MSX: https://nanochess.org/viboritas.html

The mystery grows with Bouncy Cube 😉

I'm astonished by the graphic details. Well done! I haven't tested in real hardware, but I remember the default controller stick isn't very good for diagonals. I could suggest an optional interface using the keypad as a compass rose.

It's based on the Colecovision, but includes instructions to run the programs on MSX and SG1000. So yes, the book is multi-system because the programs are highly portable (joystick in Colecovision/SG1000/MSX, and also cursor keys in MSX) Notice that the Colecovision's keypad isn't available in SG1000, and currently, there is no way to use the MSX keyboard unless you code extra subroutines.

The mystery deepens with the companion Space Raider.

If you use a label inside CVBasic it is added the prefix cvb_* For example, game_bitmaps becomes cvb_GAME_BITMAPS. CVBasic turns all names into uppercase. So maybe you need to provide these to your editor. I don't know about compatibility with the MSX/Coleco sprite editor. Maybe @Tony Cruise can test a little with CVBasic.

Hi everyone. I've been working in this game but not for making a cartridge. It's one of the games that will appear with full source code in my next book Stay tuned for more info!

These were never displayed on any computer, except if you POKE'ed directly on video screen, or you used CHR$(1) (not available in CVBasic because there exists VPOKE)

This game was made by @newcoleco maybe you should chime to ask for help.

If you want to change only a single text, you need to copy the letters for this text into another part of the character set and change their color. In this case, I define the letter A as character 1 (the portion 0-31 is unused in the default mode 0). You could copy the whole alphabet if required. DEFINE CHAR 1,1,letter_a_bitmap DEFINE COLOR 1,1,letter_a_color VPOKE $1800+72,65 ' Normal A letter VPOKE $1800+104,1 ' Colored A letter WHILE 1: WEND letter_a_bitmap: BITMAP "..X....." BITMAP ".X.X...." BITMAP "X...X..." BITMAP "X...X..." BITMAP "XXXXX..." BITMAP "X...X..." BITMAP "X...X..." BITMAP "........" letter_a_color: DATA BYTE $90,$90,$90,$90,$90,$90,$90,$90 It depends on your approach to horizontal scrolling. For my next book, I'll show how to make fast horizontal scrolling with platforms and obstacles. The design eases scrolling as only two characters need to be updated per item (two floors and two obstacles). Also, it isn't noticeable that the scrolling is in tiles because it scrolls at 30 frames per second and that's enough to look like smooth scroll. If you want to make a full-screen scrolling with graphics you can use a map in memory that you could copy with SCREEN, and switch hidden pages like I proposed here.